When is a medical treatment worth its cost?

How to evaluate medical treatments

Controlled chaos produces realistic behaviour in robotic cockroach

Making sure that vaccination works

We have all become more aware of the dangers of influenza this year, but why is it so dangerous? Julia Gog explains that the unusual structure of the influenza genome can lead to dangerous evolutionary jumps, and how mathematics is helping to understand how the virus replicates.

An activity for the classroom

Think drug-induced hallucinations, and the whirly, spirally, tunnel-vision-like patterns of psychedelic imagery immediately spring to mind. But it's not just hallucinogenic drugs that conjure up these geometric structures. People have reported seeing them in near-death experiences, following sensory deprivation, or even just after applying pressure to the eyeballs. So what can these patterns tell us about the structure of our brains?

A new Hands-On Risk and Probability Show for schools

A mathematical cancer model may lead to personalised treatment

Some preliminary results on the swine flu pandemic

A new foam with medical potential